Local Grain Storage Bins Being GPSed

Talked with a local farmer. They had applied for a local building
permit to build a grain storage bin on their farm. Within a few days a
woman shows up with a GPS unit and is GPSing where the grain bin is
being built. She also GPSed the 2 other storage bins while she was
there. She said it was so that in an emergency, the government would
know where all the grain is at so they could take control of it. Is
anyone else across the country reporting this?